Paul Leduc, Rafael Castanedo, Óscar Menéndez and other students filmed the CNH assemblies and took to the streets to record the rallies, demonstrations and confrontations that the various student groups held against the police and the army throughout 1968.
Two young boys, play hooky from school in order to explore an ultramodern world's fair. They take in the many marvelous scientific and industrial exhibits, obtain literature, eat food, and generally run amok.
Centring on the legend of the four ancient Chinese heroines, the film was a novelty for audiences at the time, as the singing performance was in Cantonese and used huangmei operatic rhythms—a popular trend in the 1960s, yet it retained traditional flavours by using operatic luogu percussion in the battle scenes.